Sheet feeder



FIG. 1 is a perspective view of a sheet feeder showing my new design;

FIG. 2 is a side view of the sheet feeder on a large scale with respect to FIG. 1;

FIG. 3 is a top view of the sheet feeder on a large scale with respect to FIG. 1;

FIG. 4 is a front view of the sheet feeder on a large scale with respect to FIG. 1;

FIG. 5 is a rear view of the sheet feeder on a large scale with respect to FIG. 1; and

FIG. 6 is a bottom view of the sheet feeder on a large scale with respect to FIG. 1. 

The ornamental design for a sheet feeder, as shown and described. 